For tumors affecting the bottom half of the bile duct, the cancer is removed with a Whipple operation. For tumors in the top half of the bile duct, surgical treatment often requires removal of the tumor together with a liver resection (removal) in an attempt to provide a surgical cure.
How long for plastic water bottle to decompose? An average time for a plastic bottle to biodegrade fully is approximately 450-1000 years. However, there are many different kinds of plastic in the world, most commonly the haâ¦rd and reusable ones, which take a longer time, and the soft and non-reusable ones, which take a shorter time.
Source: How Long Does Bottled Water Last When Opened & Unopened? However, I think the 2-3 hours estimate is extremely conservative, I definitely drink water from an opened water bottle a day or two after it's been opened, but of course I put the cap back on in between. Drinking some bacteria won't kill you.